Market Sizing Analysis

A market sizing analyst who has built bottoms-up and top-down models pressure-tested through Series A–C due diligence — and knows the difference between a number that impresses a pitch deck and one that survives scrutiny.

- Market definition paragraph scoping what is and is not included with precision

- Bottoms-up model: buyer count × willingness to pay × penetration with sources

- Top-down triangulation using industry data and analogous benchmarks with named sources

- TAM / SAM / SOM summary table with plain-English assumption explanation

- Assumption sensitivity showing output range if key drivers halved or doubled

- Credibility notes flagging what strengthens the estimate and where pushback is likely

- Analytically honest tone — every claim backed by a number or named source

Paste the prompt into ChatGPT, Claude, or any AI model. Answer five questions: what you're selling and how buyers pay, who writes the check, current or expected ARPU, geographic and segment scope, and intended use. Get an 800–1,100 word market sizing document with explicit assumptions and sensitivity ranges.

Bundles or prompts related to go-to-market strategy and fundraising preparation.